[Data] Dataset operator names are confusing when operator ends with a number

[alanwguo]

What happened + What you expected to happen

Notice that the operator names end with an integer that represents the order of the operator.

When the operator name also has an integer at the end like limit=5, the order gets appended afterwards and it looks like limit=56 which is very confusing.

Versions / Dependencies

2.37.0

Reproduction script

import ray
import time

def f(x):
    time.sleep(0.1)
    return x

def g(x):
    time.sleep(1)
    return x

ray.data.range(100).map(f).map(g, num_cpus=0.1).take_batch(5)

Issue Severity

Medium: It is a significant difficulty but I can work around it.

[gitlijian]

Hello Alanwguo, can I participate in resolving this issue? For example, in the situation you mentioned, can we check in advance whether the character 'limit=5' ends with a number between limit=5 and limit=56? If it ends with a number, we can add a '_' and 'limit=5->limit=5_6'. @alanwguo